For starters, Johnson has insulted the last two U.S. presidents, calling George W. Bush "a cross-eyed Texan warmonger" and blasting Barack Obama as "part-Kenyan" with an "ancestral dislike" of the U.K.

Article Continues Below

The current presidential candidates didn't get off any easier — Johnson described Hillary Clinton in 2007 as "a sadistic nurse in a mental hospital" and said he avoided traveling to New York because of "the real risk of meeting Donald Trump."

That's all positively tame compared to the prize-winning poem Johnson penned about the love life of Turkish Prime Minister Recep Tayyip Erdoğan. It features a goat, and that's all we're going to say about that.

Johnson also has an unfortunate knack for tumbling into embarrassing situations. He's gotten stuck on a zipline, been floored during an intense tug-of-war session, flattened a Japanese schoolboy during a game of rugby and charged into a retired German soccer player.

Johnson's new boss also doesn't seem to think to highly of his diplomatic abilities — she said, "Last time he did a deal with the Germans, I seem to remember he came back with three nearly new water cannons."

Which might be why she's outsourced one of the country's major foreign policy challenges — leaving the European Union — to a separate minister. Johnson's previously likened the EU's mission to Napoleon and Hitler.

This video includes an image from Getty Images. Music provided courtesy of APM Music.